//
//  main.c
//  +12
//
//  Created by apple on 2016/12/12.
//  Copyright © 2016年 apple. All rights reserved.
//

#include <stdio.h>
#define SQUARES 64
int main(){
    const double CROP=2E16;
    double current,total;
    int count=1;
    printf("square    grains    total   ");
    printf("fraction of\n");
    printf("          added     grains   world total\n");
    total=current=1.0;
    printf("%4d       %13.2e    %12.2e    %12.2e\n",count,current,total,total/CROP);
    while (count<SQUARES) {
        count=count+1;
        current=2.0*current;
        total=total+current;
    printf("%4d       %13.2e    %12.2e    %12.2e\n",count,current,total,total/CROP);
    }
    printf("That's all.\n");
    return 0;
    
    
}